203     unordered_map<Label, Label> &label2index = *data_->Label2Index();  in Relabel()  local
204     Label &relabel = label2index[label];  in Relabel()
206       relabel = label2index.size() + 1;  in Relabel()
242     unordered_map<Label, Label> &label2index = *data_->Label2Index();  variable
245              it = label2index.begin(); it != label2index.end(); ++it)
251       for (int i = 1; i <= label2index.size(); ++i) {
253             it = label2index.find(i);
254         if (it == label2index.end() || it->second == data_->FinalLabel())
255           pairs->push_back(pair<Label, Label>(i, label2index.size() + 1));
479     unordered_map<Label, Label> &label2index = *data_->Label2Index();  in FindIntervals()  local
487       label2index[l] = i;  in FindIntervals()